pair,contact1,contact2,flow1,flow2
2gk1_B_,20,23,1,1
2gk1_B_,21,24,1,1
2gk1_B_,32,34,1,1
2gk1_B_,35,38,1,1
2gk1_B_,38,42,1,1
2gk1_B_,39,43,1,1
2gk1_B_,40,44,1,1
2gk1_B_,41,45,1,1
2gk1_B_,42,46,1,1
2gk1_B_,43,46,1,1
2gk1_B_,43,47,1,1
2gk1_B_,44,48,1,1
2gk1_B_,47,50,1,1
2gk1_B_,47,51,1,1
2gk1_B_,48,52,1,1